CHS 38x1.2 Hiasa · Weight & Dimensions

Hiasa, cold-formed sections · Circular Hollow Section

Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.

Also known as: Caño estructural redondo (Argentina)

The CHS 38x1.2 steel profile weighs 1.1 kg/m (0.73 lb/ft). Cross-sectional area: 138.733 mm². Moment of inertia Ix = 2.351 cm⁴, Iy = 2.351 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	1.2 mm	0.05 in
Diameter (d)	38 mm	1.50 in
Weight	1.1 kg/m	0.73 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	138.73 mm²	0.215 in²
Moment of inertia (Ix)	2.35 cm⁴	0.06 in⁴
Moment of inertia (Iy)	2.35 cm⁴	0.06 in⁴
Elastic section modulus (Sx)	1.24 cm³	0.076 in³
Elastic section modulus (Sy)	1.24 cm³	0.076 in³
Plastic section modulus (Zx)	1.63 cm³	0.099 in³
Plastic section modulus (Zy)	1.63 cm³	0.099 in³
Radius of gyration (rx)	1.3 cm	0.513 in
Radius of gyration (ry)	1.3 cm	0.513 in